Under the “Dual-carbon” target, aimed at the problems of excessive investment in microgrid energy storage systems and the arrangement of retired batteries of new energy vehicles, a dual-layer optimal configuration model of a multi-microgrid shared energy storage system considering the stepwise utilization of retired batteries was proposed. First, the multi-microgrid shared energy storage system based on retired batteries was modeled. Second, a dual-layer capacity configuration model was adopted with the investment and operation and maintenance cost of microgrids as its upper-layer objective function and the daily operation cost of energy storage as its lower-layer objective function. The particle swarm optimization algorithm and Cplex linear solver were combined to solve the capacity configuration and equipment running state of shared energy storage. Finally, the result of an example indicates that the proposed model can effectively reduce costs and improve the utilization rate of resources, and the corresponding effect is remarkable.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |